fix: update OpenAPI server URL to correct workers.dev subdomain

RapidAPI gateway was returning "API unreachable" because the spec
pointed at the old withqwerty subdomain which no longer resolves.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: rahulkeerthi

openapi.yaml

@@ -15,7 +15,7 @@ info:
     url: https://github.com/withqwerty/reep
 
 servers:
-  - url: https://reep-api.withqwerty.workers.dev
+  - url: https://reep-api.rahulkeerthi2-95d.workers.dev
 
 paths:
   /search: